Mexico was the site of some of the earliest and most advanced civilizations in the western hemisphere. The Mayan culture, according to archaeological research, attained its greatest development about the 6th century AD. Another group, the Toltec, established an empire in the Valley of Mexico and developed a great civilization still evidenced by the ruins of magnificent buildings and monuments. The leading tribe, the Aztec, built great cities and developed an intricate social, political, and …showed first 75 words of 1652 total…

…showed last 75 words of 1652 total… chamber of deputies, made up of 500 members elected to 3-year terms. Three hundred are elected from single-member districts based on population, and the remainder are elected according to a system of proportional representation. Senators and deputies may not serve two consecutive terms. The highest tribunal in Mexico is the supreme court of justice, made up of 21 full- time members appointed by the country's president with the consent of the senate. Other important